#pragma once

#include <iostream>
#include <string.h>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include "log.hpp"
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <cstdlib>
#include <sys/wait.h>
#include <signal.h>
#include <pthread.h>
#include "ThreadPool.hpp"
#include "Task.hpp"

namespace server
{
    using namespace std;
    enum
    {
        USAGE_ERR = 1,
        SOCKET_ERR,
        BIND_ERR,
        LISTEN_ERR
    };

    const static uint16_t gport = 8080;
    static const int gbacklog = 5;

    class TcpServer;
    class ThreadData
    {
    public:
        ThreadData(TcpServer *self, int sock)
            : _self(self), _sock(sock)
        {
        }

        ~ThreadData()
        {
        }

    public:
        TcpServer *_self;
        int _sock;
    };

    class TcpServer
    {
    public:
        TcpServer(const uint16_t &port = gport)
            : _port(port), _listensock(-1)
        {
        }

        void initServer()
        {
            // 1、创建socket文件套接字对象
            _listensock = socket(AF_INET, SOCK_STREAM, 0);
            if (_listensock < 0)
            {
                // 封装日志函数
                logMessage(FATAL, "create socket error");
                exit(SOCKET_ERR);
            }
            logMessage(NORMAL, "create socket success: %d",_listensock);

            // 2、bind绑定自己的网络信息
            struct sockaddr_in local;
            memset(&local, 0, sizeof(local));
            local.sin_family = AF_INET;
            local.sin_port = htons(_port);
            local.sin_addr.s_addr = INADDR_ANY;
            if (bind(_listensock, (struct sockaddr *)&local, sizeof(local)) < 0)
            {
                logMessage(FATAL, "bind socket error");
                exit(BIND_ERR);
            }
            logMessage(NORMAL, "bind socket success");

            // 3、设置socket为监听状态，因为必须时时刻刻关心是否向我发送请求
            // listen函数,能一直获取新连接，处理链接请求
            if (listen(_listensock, gbacklog) < 0)
            {
                logMessage(FATAL, "listen socket error");
                exit(LISTEN_ERR);
            }
            logMessage(NORMAL, "listen socket success");
        }

        void start()
        {
            // 线程池初始化
            ThreadPool<Task>::getinstance()->run();
            logMessage(NORMAL, "thread init success");

            for (;;)
            {
                // 4、server获取新链接
                struct sockaddr_in peer;
                socklen_t len = sizeof(peer);
                // 这里的sock是未来和客户端通信的fd文件描述符
                int sock = accept(_listensock, (struct sockaddr *)&peer, &len);
                if (sock < 0)
                {
                    logMessage(ERROR, "accept error, next");
                    continue;
                }
                logMessage(NORMAL, "accept a new link success,get new sock: %d,sock");
                cout << "sock: " << sock << endl;

                Task t(sock,serviceIO);
                // demo4线程池版
                ThreadPool<Task>::getinstance()->push(t);
            }
        }

        ~TcpServer()
        {
        }

    private:
        int _listensock; // 不是用来通信的，是用来监听，获取新链接的，叫做listen套接字
        uint16_t _port;
    };
}
